rawblock

Raw Block Volume Example

1. Specify volumeMode as Block in PVC

volumeMode is Filesystem by default

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: pvc-azuredisk
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
  volumeMode: Block
  storageClassName: managed-csi

2. Specify volumeDevices, devicePath in Pod Spec

kind: Pod
apiVersion: v1
metadata:
  name: nginx-azuredisk
spec:
  nodeSelector:
    kubernetes.io/os: linux
  containers:
  - image: mcr.microsoft.com/oss/nginx/nginx:1.17.3-alpine
    name: nginx-azuredisk
    volumeDevices:
    - name: azuredisk
      devicePath: /dev/sdx
  volumes:
  - name: azuredisk
    persistentVolumeClaim:
      claimName: pvc-azuredisk

3. Check block device in pod

# kubectl exec -it nginx-azuredisk bash
root@nginx-azuredisk:/# dd if=/dev/zero of=/dev/sdx bs=1024k count=100
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 0.0566293 s, 1.9 GB/s